Zhongyan Evonik laser marking machine
High-precision positioning: It adopts a double-rock base of marble and granite, with a thermal expansion coefficient nearly zero and a full-stroke straightness of ±5μm. Combined with Renishaw grating system and Gaocun driver, a 0.5μ m-level closed-loop positioning is achieved, with an error mapping accuracy of ±1.5μm. This can eliminate the problem of "line deviation", meeting the micron-level high-precision cutting requirements in perovskite battery production. It effectively avoids line offset caused by platform deformation and ensures the photoelectric conversion efficiency of the battery.
High stability: Granite has the characteristics of resistance to temperature changes and corrosion. Its performance does not decline within a wide temperature range from -20℃ to 50℃. The rigid structure composed of it and marble, combined with shock-absorbing airbags, has a vibration attenuation rate of over 90%, and the vibration amplitude of the equipment itself is less than 0.1μm. The consistency of the marking is improved by 40%, which can adapt to harsh scenarios such as dust-free workshops and high-humidity environments. It ensures that the laser head does not shake during high-speed movement, and the marking edge is smooth without burrs, which helps to improve the product yield.
High-speed processing: Linear motor direct drive technology combined with granite base and other designs, the acceleration can soar to 1.6G, and it can move at a top speed of 1000mm/s. Even under a load of 750kg, it can still maintain a speed stability of 1%, support 7× 24-hour continuous production, extend the maintenance cycle by more than three times, significantly reduce downtime costs, and improve production efficiency.
ROFIN laser processing system
High-efficiency processing: In the laser processing of PERC cells, the module platform of the system has two independent conveyor belts for transporting wafers, each equipped with a laser. The core of the machine adopts a high-precision granite base to support the rapid transmission of the laser source and wafers. Through the "flight processing" technology, the time for silicon wafer transmission and transfer in the laser processing cycle has been basically reduced. The processing speed can reach 4,500 pieces per hour, greatly enhancing production efficiency.
High-precision processing Due to the use of granite bases, the stability and high precision of laser source and wafer transmission are guaranteed, enabling laser processing to meet various high-precision processing requirements in PERC battery production, such as solid line, dashed line, point-line processing, as well as selective emitter, MWT drilling and edge insulation processes, all of which can be processed with high precision on the same platform.
From the above cases, it can be seen that granite bases have multiple advantages in battery production lines, including excellent thermal stability, high rigidity and seismic resistance, high-precision retention, and good corrosion resistance, etc. These advantages help to improve the efficiency, quality and consistency of battery production, reduce production and maintenance costs, and thus promote the development of the battery industry.
Post time: May-15-2025